Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 643a118d94807a21…

MALICIOUS

Office (OLE) / .DOCX

144.7 KB Created: 2020-09-29 22:29:00 Authoring application: Microsoft Office Word
MD5: 37c55df4a4b75c7f8537c021d282d0f6 SHA-1: 179a031f2353659d043f3851e94ff7903e6aa9c5 SHA-256: 643a118d94807a21df75a7aede93130326ac04ce84a10d9fa67b1f5f87d3467a
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names Emotet, a well-known banking trojan and downloader. The obfuscated VBA script uses CreateObject, suggesting it attempts to execute code or download a second-stage payload, aligning with Emotet's typical behavior.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769425-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769425-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
236c4e22a64ac61d77ecd3058e389c25a424fb288d33e5ff92abfd3f1b24ea8c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10347 bytes

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